{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["enabling technology", "process characterization", "manufacturing process", "engineering feature", "material", "concept or principle"], "input": "Here , wire arc additive manufacturing ( WAAM ) process was used to fabricate a steel-nickel structural component , whose average tensile strength of 634 MPa significantly exceeded that of feedstock materials ( steel , 537 MPa and nickel , 455 MPa ) , which has not been reported previously ."}
{"enabling technology": [], "process characterization": [], "manufacturing process": ["wire arc additive manufacturing", "WAAM", "fabricate"], "engineering feature": [], "material": ["steel", "nickel", "feedstock materials"], "concept or principle": ["process", "structural component", "average", "MPa"]}